spring @Scheduled(cron =““)动态配置cron

package pugv.app.job.data.config.task;

import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.TaskScheduler;
import org.springframework.scheduling.config.CronTask;
import org.springframework.stereotype.Component;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * @program:
 * @description: 添加定时任务注册类，用来增加、删除定时任务。
 * @author: yaochu
 * @date:
 **/
@Component
public class CronTaskRegistrar implements DisposableBean {

    private final Map<Runnable, ScheduledTask> scheduledTasks = new ConcurrentHashMap<>(16);

    @Autowired
    private TaskScheduler taskScheduler;

    public TaskScheduler getScheduler() {
        return this.taskScheduler;
    }

    /**
     * 新增定时任务
     *
     * @param task
     * @param cronExpression
     */
    public void addCronTask(Runnable task, String cronExpression) {
        addCronTask(new CronTask(task, cronExpression));
    }

    public void addCronTask(CronTask cronTask) {
        if (cronTask != null) {
            Runnable task = cronTask.getRunnable();
            if (this.scheduledTasks.containsKey(task)) {
                removeCronTask(task);
            }

            this.scheduledTasks.put(task, scheduleCronTask(cronTask));
        }
    }

    /**
     * 移除定时任务
     *
     * @param task
     */
    public void removeCronTask(Runnable task) {
        ScheduledTask scheduledTask = this.scheduledTasks.remove(task);
        if (scheduledTask != null)
            scheduledTask.cancel();
    }

    public ScheduledTask scheduleCronTask(CronTask cronTask) {
        ScheduledTask scheduledTask = new ScheduledTask();
        scheduledTask.future = this.taskScheduler.schedule(cronTask.getRunnable(), cronTask.getTrigger());

        return scheduledTask;
    }


    @Override
    public void destroy() {
        for (ScheduledTask task : this.scheduledTasks.values()) {
            task.cancel();
        }
        this.scheduledTasks.clear();
    }
}

package pugv.app.job.data.config.task;

import java.util.concurrent.ScheduledFuture;

/**
 * @program:
 * @description: 定时任务控制类
 * @author: yaochu
 * @date:
 **/
public final class ScheduledTask {

    public volatile ScheduledFuture<?> future;
    /**
     * 取消定时任务
     */
    public void cancel() {
        ScheduledFuture<?> future = this.future;
        if (future != null) {
            future.cancel(true);
        }
    }
}

package pugv.app.job.data.config.task;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.ReflectionUtils;
import pugv.app.job.data.util.SpringContextUtils;

import java.lang.reflect.Method;
import java.util.Objects;

/**
 * @program:
 * @description: 定时任务运行类
 * @author: yaochu
 * @date:
 **/
public class SchedulingRunnable implements Runnable {

    private static final Logger logger = LoggerFactory.getLogger(SchedulingRunnable.class);

    private String beanName;

    private String methodName;

    private Object[] params;

    public SchedulingRunnable(String beanName, String methodName) {
        this(beanName, methodName, null);
    }

    public SchedulingRunnable(String beanName, String methodName, Object...params ) {
        this.beanName = beanName;
        this.methodName = methodName;
        this.params = params;
    }

    @Override
    public void run() {
        logger.info("定时任务开始执行 - bean：{}，方法：{}，参数：{}", beanName, methodName, params);
        long startTime = System.currentTimeMillis();

        try {
            Object target = SpringContextUtils.getBean(beanName);

            Method method = null;
            if (null != params && params.length > 0) {
                Class<?>[] paramCls = new Class[params.length];
                for (int i = 0; i < params.length; i++) {
                    paramCls[i] = params[i].getClass();
                }
                method = target.getClass().getDeclaredMethod(methodName, paramCls);
            } else {
                method = target.getClass().getDeclaredMethod(methodName);
            }

            ReflectionUtils.makeAccessible(method);
            if (null != params && params.length > 0) {
                method.invoke(target, params);
            } else {
                method.invoke(target);
            }
        } catch (Exception ex) {
            logger.error(String.format("定时任务执行异常 - bean：%s，方法：%s，参数：%s ", beanName, methodName, params), ex);
        }

        long times = System.currentTimeMillis() - startTime;
        logger.info("定时任务执行结束 - bean：{}，方法：{}，参数：{}，耗时：{} 毫秒", beanName, methodName, params, times);
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        SchedulingRunnable that = (SchedulingRunnable) o;
        if (params == null) {
            return beanName.equals(that.beanName) &&
                    methodName.equals(that.methodName) &&
                    that.params == null;
        }

        return beanName.equals(that.beanName) &&
                methodName.equals(that.methodName) &&
                params.equals(that.params);
    }

    @Override
    public int hashCode() {
        if (params == null) {
            return Objects.hash(beanName, methodName);
        }

        return Objects.hash(beanName, methodName, params);
    }
}

package pugv.app.job.data.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.TaskScheduler;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;

@Configuration
public class SchedulingConfig {
    @Bean
    public TaskScheduler taskScheduler() {
        ThreadPoolTaskScheduler taskScheduler = new ThreadPoolTaskScheduler();
        // 定时任务执行线程池核心线程数
        taskScheduler.setPoolSize(8);
        taskScheduler.setRemoveOnCancelPolicy(true);
        taskScheduler.setThreadNamePrefix("TaskSchedulerThreadPool-");
        return taskScheduler;
    }
}

这个commadLineRunner 相当于启动监听  注册定时器 

package pugv.app.job.data.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.CommandLineRunner;
import org.springframework.stereotype.Component;
import pugv.app.job.data.config.task.CronTaskRegistrar;
import pugv.app.job.data.config.task.SchedulingRunnable;

@Component
public class SpringListener implements CommandLineRunner {
    @Autowired
    CronTaskRegistrar cronTaskRegistrar;
    @Value("${spring.gmv.cron}")
    private String springGmvTimer;
    @Value("${hive.revenue.cron}")
    private String hiveRevenueCornTimer;

    @Override
    public void run(String... args) throws Exception {
        SchedulingRunnable task = new SchedulingRunnable("springRevenueProcessor", "process", null);
        cronTaskRegistrar.addCronTask(task, hiveRevenueCornTimer);

        SchedulingRunnable task2 = new SchedulingRunnable("springRevenueHiveJobRevenueProcessor", "process1", null);
        cronTaskRegistrar.addCronTask(task2, springGmvTimer);
    }
}

package pugv.app.job.data.util;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * @program:
 * @description: spring获取bean工具类
 * @author: yaochu
 * @date:
 **/
@Component
public class SpringContextUtils implements ApplicationContextAware {

    private static ApplicationContext applicationContext = null;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if (SpringContextUtils.applicationContext == null) {
            SpringContextUtils.applicationContext = applicationContext;
        }
    }

    //获取applicationContext
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    //通过name获取 Bean.
    public static Object getBean(String name) {
        return getApplicationContext().getBean(name);
    }

    //通过class获取Bean.
    public static <T> T getBean(Class<T> clazz) {
        return getApplicationContext().getBean(clazz);
    }

    //通过name,以及Clazz返回指定的Bean
    public static <T> T getBean(String name, Class<T> clazz) {
        return getApplicationContext().getBean(name, clazz);
    }
}